This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X75-40, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X75-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X75-40
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40
The AirTAC SIJ80X75-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable 35-75 mm extension out of the 75 mm nominal maximum. The 80 mm bore uses a G3/8 port, a 25 mm rod, and 36 mm adjustable cushions.
The direct replacement is the SAIJ80X75-40, retaining the same ISO 15552 mounting interface, force, and adjust window. The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch, and the stop screw sets end position only—it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X75-40 |
| Bore size | Ø80 mm |
| Stroke | 75 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ80X75-40 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X75-40 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40 Is Used
Variable Pitch Forming
Sheet metal bending stations needing precise end-position tuning across different material thicknesses without swapping the entire actuator.
Adjustable Diverter Gate
Routing mechanisms where the extend reach must be fine-tuned on-site to accommodate varying package widths on the line.
Variable Depth Sealing
End-of-line carton flap folding that requires altering the extend stroke on-site to seal different box heights securely.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40 with the SAIJ80X75-40
To replace the discontinued SIJ80X75-40, order the direct replacement SAIJ80X75-40. The 40 mm adjust window is ideal if your end-position needs field tuning between 35 and 75 mm. Reuse your FA, LB, or TC mounts directly via the ISO 15552 interface. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add -S for legacy CS1-B/DS1-B sensing. For strokes of 300 mm or longer, verify your side-load limits to prevent rod distortion. The external stop sets the end position but does not hold the load on air loss—use an external rod lock or SAIL/BSAI variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X75-40
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-40 FAQ
Yes, the SIJ80X75-40 is discontinued.
The external stop screw allows you to trim the extend stroke by up to 40 mm on-site, yielding a usable 35-75 mm extension from the 75 mm nominal maximum.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X75-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X75-40 replacement — usually within 7-8 hours.